TMP86FS49AFG Toshiba Semiconductor, TMP86FS49AFG Datasheet - Page 173

• Manufacturer Part Number: TMP86FS49AFG
• Description: 8-Bit Microcontroller
• Manufacturer: Toshiba Semiconductor

TD2BUF
TXD2 pin
UART2SR<TBEP>
INTTXD2 interrupt
Shift register
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13.9.6 Transmit End Flag
TXD2 pin
UART2SR<TBEP>
UART2SR<TEND>
INTTXD2 interrupt
Shift register
Figure 13-10 Generation of Transmit End Flag and Transmit Data Buffer Empty
UART2SR<TEND> is set to “1”. The UART2SR<TEND> is cleared to “0” when the data transmit is started
after writing the TD2BUF.
When data are transmitted and no data is in TD2BUF (UART2SR<TBEP> = “1”), transmit end flag
***** 1
xxxx
Figure 13-9 Generation of Transmit Data Buffer Empty
***
1xx
1xxxx0
Start
****
Data write
* 1xxxx
1x
Bit 0
yyyy
***** 1
Stop
Page 157
Data write for TD2BUF
Final bit
**** 1x
***** 1
Stop
After reading UART2SR writing
TD2BUF clears TBEP.
1yyyy0
1yyyy0
Start
TMP86FS49AFG
zzzz
Data write
* 1yyyy
Bit 0